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Communicate with an AZD-KD step driver using a laptop

Posted: Mon Jun 04, 2018 12:06 am
by jcacace
Hi to all,

I am really new of modbus and step motor controllers like the AZD-KD, so sorry for my (hopefully) simple questions. I bought a solution with 3 AZD-KD connected via RJ45 connectors. For what I understand I have 1 master and 2 slaves. On the last slaves a RJ45 connector is free. I want to know if is possible to control all the motors using such port. I tried to search for a RJ45 -> USB adapter, but I am not sure that this will be enough to implement the modbus protocol in RTU mode.

Can you give me some hints to start the communication?? I have tried to connect my laptop using the mini-usb port on the side of the controller, and I am able to get/set parameters and position, but I want to implement a control loop for all the motors of my system

Thank you!

Re: Communicate with an AZD-KD step driver using a laptop

Posted: Mon Jun 04, 2018 7:07 am
by om_tech_support_AC
Hi Jcacace,

For the USB to RS485 converter it would be suggested to use the MWE820A. For more information about MWE820A and the pinouts please refer to the document below.

http://www.orientalmotor.com/products/p ... erter-(USB)-v2-0.pdf

It is possible to control up to 31 slaves using a master controller over RS-485. The mini-usb port on the AZD-KD only allows for communication with a single driver via a PC. Linked below is the start of Modbus RTU/RS-485 setup, wiring and communication examples for the AZ series.

http://www.orientalmotor.com/products/p ... f#page=260

Re: Communicate with an AZD-KD step driver using a laptop

Posted: Thu Aug 09, 2018 6:09 am
by Aro
Hi everybody,

I am working too with the AZD-KD and I have no experience in Modbus RTU. I d'like to know how do I connect the RS485 cable to a laptop? In the doc, it is indicated that a commercially available LAN cable can also be used to connect the driver, does it mean an Ethernet RJ 45 cable ?

Re: Communicate with an AZD-KD step driver using a laptop

Posted: Thu Aug 09, 2018 6:53 am
by om_tech_support_AC
Hi Aro,

With the MWE820A you can convert the RS485 communication or RJ45 connection into a USB connection for a laptop. For more information please refer to the link below.

https://www.orientalmotor.com/products/ ... B_v1_0.pdf

Re: Communicate with an AZD-KD step driver using a laptop

Posted: Thu Aug 09, 2018 8:02 am
by Aro
Thanks a lot,

I was not thinking of cutting the other extremity of a RJ45 cable. Now it is more clear in my mind.